From the beginning of November 2018 and the end of May 2019, a mobile activated carbon tank with a charge of 9,000 kg was installed at the Dömsöd biogas plant to remove the hydrogen sulfide content of the biogas. Thanks to the mobile tank, there was no need for a high investment cost, and thanks to the daily rental system, the investor actually only incurred the cost for the period for which he used the service. At the end of the lease period, the tank could be easily disconnected from the existing system and shipped along with the depleted activated carbon.